This medical strength creamy serum works like a skin primer but does more than just "fill in" pores. It instantly provides smoother, more refined skin PLUS daily use helps reduce the size of pores to give you a more confident comp...This medical strength creamy serum works like a skin primer but does more than just "fill in" pores. It instantly provides smoother, more refined skin PLUS daily use helps reduce the size of pores to give you a more confident complextion.